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Basic positron properties of oxides: A computational study

Authors
Journal
Radiation Physics and Chemistry
0969-806X
Publisher
Elsevier
Publication Date
Volume
76
Issue
2
Identifiers
DOI: 10.1016/j.radphyschem.2006.03.013
Keywords
  • Oxides
  • Positron Lifetime
  • Positron Affinity
  • Positron Distribution
  • Beryllia
  • Magnesia
  • Electron–Positron Correlations
Disciplines
  • Computer Science

Abstract

Abstract In this contribution we concentrate on two selected oxides, MgO and BeO, and examine theoretically their basic positron characteristics. In particular, we calculate the bulk positron lifetime and affinity and determine the positron distribution in defect free systems. Both self-consistent and non-self-consistent computational methods are used in calculations. Obtained characteristics are then discussed in terms of the structure and bonding properties of oxides and are compared to experimental data available. The issue of electron–positron correlations in insulating materials is also mentioned.

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